I hit a bad grub infestation with Cedar Cure and NP123 and it knocked them all out. I put it on at the high rate with a hydroseeder at @ 5 gallons of water per k. I was unable to water it in. That was the second application i did, the first , put on with a pull behind sprayer followed by an inch of rain overnight, didn't seem to kill anything but Barry and ICT sent me a free retreat and it worked great.